(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i.
*/
/* globals window */
const buildGroth16 = require("./src/groth16.js");
buildGroth16().then( (groth16) => {
window.groth16 = groth16;
window.genZKSnarkProof = function(witness, provingKey, cb) {
const p = groth16.proof(witness, provingKey);
if (cb) {
p.then( (proof) => {
cb(null, proof);
}, (err) => {
cb(err);
});
} else {
return p;
}
};
});
},{"./src/groth16.js":4}],3:[function(require,module,exports){
var bigInt = (function (undefined) {
"use strict";
var BASE = 1e7,
LOG_BASE = 7,
MAX_INT = 9007199254740992,
MAX_INT_ARR = smallToArray(MAX_INT),
DEFAULT_ALPHABET = "0123456789abcdefghijklmnopqrstuvwxyz";
var supportsNativeBigInt = typeof BigInt === "function";
function Integer(v, radix, alphabet, caseSensitive) {
if (typeof v === "undefined") return Integer[0];
if (typeof radix !== "undefined") return +radix === 10 && !alphabet ? parseValue(v) : parseBase(v, radix, alphabet, caseSensitive);
return parseValue(v);
}
function BigInteger(value, sign) {
this.value = value;
this.sign = sign;
this.isSmall = false;
}
BigInteger.prototype = Object.create(Integer.prototype);
function SmallInteger(value) {
this.value = value;
this.sign = value < 0;
this.isSmall = true;
}
SmallInteger.prototype = Object.create(Integer.prototype);
function NativeBigInt(value) {
this.value = value;
}
NativeBigInt.prototype = Object.create(Integer.prototype);
function isPrecise(n) {
return -MAX_INT < n && n < MAX_INT;
}
function smallToArray(n) { // For performance reasons doesn't reference BASE, need to change this function if BASE changes
if (n < 1e7)
return [n];
if (n < 1e14)
return [n % 1e7, Math.floor(n / 1e7)];
return [n % 1e7, Math.floor(n / 1e7) % 1e7, Math.floor(n / 1e14)];
}
function arrayToSmall(arr) { // If BASE changes this function may need to change
trim(arr);
var length = arr.length;
if (length < 4 && compareAbs(arr, MAX_INT_ARR) < 0) {
switch (length) {
case 0: return 0;
case 1: return arr[0];
case 2: return arr[0] + arr[1] * BASE;
default: return arr[0] + (arr[1] + arr[2] * BASE) * BASE;
}
}
return arr;
}
function trim(v) {
var i = v.length;
while (v[--i] === 0);
v.length = i + 1;
}
function createArray(length) { // function shamelessly stolen from Yaffle's library https://github.com/Yaffle/BigInteger
var x = new Array(length);
var i = -1;
while (++i < length) {
x[i] = 0;
}
return x;
}
function truncate(n) {
if (n > 0) return Math.floor(n);
return Math.ceil(n);
}
function add(a, b) { // assumes a and b are arrays with a.length >= b.length
var l_a = a.length,
l_b = b.length,
r = new Array(l_a),
carry = 0,
base = BASE,
sum, i;
for (i = 0; i < l_b; i++) {
sum = a[i] + b[i] + carry;
carry = sum >= base ? 1 : 0;
r[i] = sum - carry * base;
}
while (i < l_a) {
sum = a[i] + carry;
carry = sum === base ? 1 : 0;
r[i++] = sum - carry * base;
}
if (carry > 0) r.push(carry);
return r;
}
function addAny(a, b) {
if (a.length >= b.length) return add(a, b);
return add(b, a);
}
function addSmall(a, carry) { // assumes a is array, carry is number with 0 <= carry < MAX_INT
var l = a.length,
r = new Array(l),
base = BASE,
sum, i;
for (i = 0; i < l; i++) {
sum = a[i] - base + carry;
carry = Math.floor(sum / base);
r[i] = sum - carry * base;
carry += 1;
}
while (carry > 0) {
r[i++] = carry % base;
carry = Math.floor(carry / base);
}
return r;
}
BigInteger.prototype.add = function (v) {
var n = parseValue(v);
if (this.sign !== n.sign) {
return this.subtract(n.negate());
}
var a = this.value, b = n.value;
if (n.isSmall) {
return new BigInteger(addSmall(a, Math.abs(b)), this.sign);
}
return new BigInteger(addAny(a, b), this.sign);
};
BigInteger.prototype.plus = BigInteger.prototype.add;
SmallInteger.prototype.add = function (v) {
var n = parseValue(v);
var a = this.value;
if (a < 0 !== n.sign) {
return this.subtract(n.negate());
}
var b = n.value;
if (n.isSmall) {
if (isPrecise(a + b)) return new SmallInteger(a + b);
b = smallToArray(Math.abs(b));
}
return new BigInteger(addSmall(b, Math.abs(a)), a < 0);
};
SmallInteger.prototype.plus = SmallInteger.prototype.add;
NativeBigInt.prototype.add = function (v) {
return new NativeBigInt(this.value + parseValue(v).value);
}
NativeBigInt.prototype.plus = NativeBigInt.prototype.add;
function subtract(a, b) { // assumes a and b are arrays with a >= b
var a_l = a.length,
b_l = b.length,
r = new Array(a_l),
borrow = 0,
base = BASE,
i, difference;
for (i = 0; i < b_l; i++) {
difference = a[i] - borrow - b[i];
if (difference < 0) {
difference += base;
borrow = 1;
} else borrow = 0;
r[i] = difference;
}
for (i = b_l; i < a_l; i++) {
difference = a[i] - borrow;
if (difference < 0) difference += base;
else {
r[i++] = difference;
break;
}
r[i] = difference;
}
for (; i < a_l; i++) {
r[i] = a[i];
}
trim(r);
return r;
}
function subtractAny(a, b, sign) {
var value;
if (compareAbs(a, b) >= 0) {
value = subtract(a, b);
} else {
value = subtract(b, a);
sign = !sign;
}
value = arrayToSmall(value);
if (typeof value === "number") {
if (sign) value = -value;
return new SmallInteger(value);
}
return new BigInteger(value, sign);
}
function subtractSmall(a, b, sign) { // assumes a is array, b is number with 0 <= b < MAX_INT
var l = a.length,
r = new Array(l),
carry = -b,
base = BASE,
i, difference;
for (i = 0; i < l; i++) {
difference = a[i] + carry;
carry = Math.floor(difference / base);
difference %= base;
r[i] = difference < 0 ? difference + base : difference;
}
r = arrayToSmall(r);
if (typeof r === "number") {
if (sign) r = -r;
return new SmallInteger(r);
} return new BigInteger(r, sign);
}
BigInteger.prototype.subtract = function (v) {
var n = parseValue(v);
if (this.sign !== n.sign) {
return this.add(n.negate());
}
var a = this.value, b = n.value;
if (n.isSmall)
return subtractSmall(a, Math.abs(b), this.sign);
return subtractAny(a, b, this.sign);
};
BigInteger.prototype.minus = BigInteger.prototype.subtract;
SmallInteger.prototype.subtract = function (v) {
var n = parseValue(v);
var a = this.value;
if (a < 0 !== n.sign) {
return this.add(n.negate());
}
var b = n.value;
if (n.isSmall) {
return new SmallInteger(a - b);
}
return subtractSmall(b, Math.abs(a), a >= 0);
};
SmallInteger.prototype.minus = SmallInteger.prototype.subtract;
NativeBigInt.prototype.subtract = function (v) {
return new NativeBigInt(this.value - parseValue(v).value);
}
NativeBigInt.prototype.minus = NativeBigInt.prototype.subtract;
BigInteger.prototype.negate = function () {
return new BigInteger(this.value, !this.sign);
};
SmallInteger.prototype.negate = function () {
var sign = this.sign;
var small = new SmallInteger(-this.value);
small.sign = !sign;
return small;
};
NativeBigInt.prototype.negate = function () {
return new NativeBigInt(-this.value);
}
BigInteger.prototype.abs = function () {
return new BigInteger(this.value, false);
};
SmallInteger.prototype.abs = function () {
return new SmallInteger(Math.abs(this.value));
};
NativeBigInt.prototype.abs = function () {
return new NativeBigInt(this.value >= 0 ? this.value : -this.value);
}
function multiplyLong(a, b) {
var a_l = a.length,
b_l = b.length,
l = a_l + b_l,
r = createArray(l),
base = BASE,
product, carry, i, a_i, b_j;
for (i = 0; i < a_l; ++i) {
a_i = a[i];
for (var j = 0; j < b_l; ++j) {
b_j = b[j];
product = a_i * b_j + r[i + j];
carry = Math.floor(product / base);
r[i + j] = product - carry * base;
r[i + j + 1] += carry;
}
}
trim(r);
return r;
}
function multiplySmall(a, b) { // assumes a is array, b is number with |b| < BASE
var l = a.length,
r = new Array(l),
base = BASE,
carry = 0,
product, i;
for (i = 0; i < l; i++) {
product = a[i] * b + carry;
carry = Math.floor(product / base);
r[i] = product - carry * base;
}
while (carry > 0) {
r[i++] = carry % base;
carry = Math.floor(carry / base);
}
return r;
}
function shiftLeft(x, n) {
var r = [];
while (n-- > 0) r.push(0);
return r.concat(x);
}
function multiplyKaratsuba(x, y) {
var n = Math.max(x.length, y.length);
if (n <= 30) return multiplyLong(x, y);
n = Math.ceil(n / 2);
var b = x.slice(n),
a = x.slice(0, n),
d = y.slice(n),
c = y.slice(0, n);
var ac = multiplyKaratsuba(a, c),
bd = multiplyKaratsuba(b, d),
abcd = multiplyKaratsuba(addAny(a, b), addAny(c, d));
var product = addAny(addAny(ac, shiftLeft(subtract(subtract(abcd, ac), bd), n)), shiftLeft(bd, 2 * n));
trim(product);
return product;
}
// The following function is derived from a surface fit of a graph plotting the performance difference
// between long multiplication and karatsuba multiplication versus the lengths of the two arrays.
function useKaratsuba(l1, l2) {
return -0.012 * l1 - 0.012 * l2 + 0.000015 * l1 * l2 > 0;
}
BigInteger.prototype.multiply = function (v) {
var n = parseValue(v),
a = this.value, b = n.value,
sign = this.sign !== n.sign,
abs;
if (n.isSmall) {
if (b === 0) return Integer[0];
if (b === 1) return this;
if (b === -1) return this.negate();
abs = Math.abs(b);
if (abs < BASE) {
return new BigInteger(multiplySmall(a, abs), sign);
}
b = smallToArray(abs);
}
if (useKaratsuba(a.length, b.length)) // Karatsuba is only faster for certain array sizes
return new BigInteger(multiplyKaratsuba(a, b), sign);
return new BigInteger(multiplyLong(a, b), sign);
};
BigInteger.prototype.times = BigInteger.prototype.multiply;
function multiplySmallAndArray(a, b, sign) { // a >= 0
if (a < BASE) {
return new BigInteger(multiplySmall(b, a), sign);
}
return new BigInteger(multiplyLong(b, smallToArray(a)), sign);
}
SmallInteger.prototype._multiplyBySmall = function (a) {
if (isPrecise(a.value * this.value)) {
return new SmallInteger(a.value * this.value);
}
return multiplySmallAndArray(Math.abs(a.value), smallToArray(Math.abs(this.value)), this.sign !== a.sign);
};
BigInteger.prototype._multiplyBySmall = function (a) {
if (a.value === 0) return Integer[0];
if (a.value === 1) return this;
if (a.value === -1) return this.negate();
return multiplySmallAndArray(Math.abs(a.value), this.value, this.sign !== a.sign);
};
SmallInteger.prototype.multiply = function (v) {
return parseValue(v)._multiplyBySmall(this);
};
SmallInteger.prototype.times = SmallInteger.prototype.multiply;
NativeBigInt.prototype.multiply = function (v) {
return new NativeBigInt(this.value * parseValue(v).value);
}
NativeBigInt.prototype.times = NativeBigInt.prototype.multiply;
function square(a) {
//console.assert(2 * BASE * BASE < MAX_INT);
var l = a.length,
r = createArray(l + l),
base = BASE,
product, carry, i, a_i, a_j;
for (i = 0; i < l; i++) {
a_i = a[i];
carry = 0 - a_i * a_i;
for (var j = i; j < l; j++) {
a_j = a[j];
product = 2 * (a_i * a_j) + r[i + j] + carry;
carry = Math.floor(product / base);
r[i + j] = product - carry * base;
}
r[i + l] = carry;
}
trim(r);
return r;
}
BigInteger.prototype.square = function () {
return new BigInteger(square(this.value), false);
};
SmallInteger.prototype.square = function () {
var value = this.value * this.value;
if (isPrecise(value)) return new SmallInteger(value);
return new BigInteger(square(smallToArray(Math.abs(this.value))), false);
};
NativeBigInt.prototype.square = function (v) {
return new NativeBigInt(this.value * this.value);
}
function divMod1(a, b) { // Left over from previous version. Performs faster than divMod2 on smaller input sizes.
var a_l = a.length,
b_l = b.length,
base = BASE,
result = createArray(b.length),
divisorMostSignificantDigit = b[b_l - 1],
// normalization
lambda = Math.ceil(base / (2 * divisorMostSignificantDigit)),
remainder = multiplySmall(a, lambda),
divisor = multiplySmall(b, lambda),
quotientDigit, shift, carry, borrow, i, l, q;
if (remainder.length <= a_l) remainder.push(0);
divisor.push(0);
divisorMostSignificantDigit = divisor[b_l - 1];
for (shift = a_l - b_l; shift >= 0; shift--) {
quotientDigit = base - 1;
if (remainder[shift + b_l] !== divisorMostSignificantDigit) {
quotientDigit = Math.floor((remainder[shift + b_l] * base + remainder[shift + b_l - 1]) / divisorMostSignificantDigit);
}
// quotientDigit <= base - 1
carry = 0;
borrow = 0;
l = divisor.length;
for (i = 0; i < l; i++) {
carry += quotientDigit * divisor[i];
q = Math.floor(carry / base);
borrow += remainder[shift + i] - (carry - q * base);
carry = q;
if (borrow < 0) {
remainder[shift + i] = borrow + base;
borrow = -1;
} else {
remainder[shift + i] = borrow;
borrow = 0;
}
}
while (borrow !== 0) {
quotientDigit -= 1;
carry = 0;
for (i = 0; i < l; i++) {
carry += remainder[shift + i] - base + divisor[i];
if (carry < 0) {
remainder[shift + i] = carry + base;
carry = 0;
} else {
remainder[shift + i] = carry;
carry = 1;
}
}
borrow += carry;
}
result[shift] = quotientDigit;
}
// denormalization
remainder = divModSmall(remainder, lambda)[0];
return [arrayToSmall(result), arrayToSmall(remainder)];
}
function divMod2(a, b) { // Implementation idea shamelessly stolen from Silent Matt's library http://silentmatt.com/biginteger/
// Performs faster than divMod1 on larger input sizes.
var a_l = a.length,
b_l = b.length,
result = [],
part = [],
base = BASE,
guess, xlen, highx, highy, check;
while (a_l) {
part.unshift(a[--a_l]);
trim(part);
if (compareAbs(part, b) < 0) {
result.push(0);
continue;
}
xlen = part.length;
highx = part[xlen - 1] * base + part[xlen - 2];
highy = b[b_l - 1] * base + b[b_l - 2];
if (xlen > b_l) {
highx = (highx + 1) * base;
}
guess = Math.ceil(highx / highy);
do {
check = multiplySmall(b, guess);
if (compareAbs(check, part) <= 0) break;
guess--;
} while (guess);
result.push(guess);
part = subtract(part, check);
}
result.reverse();
return [arrayToSmall(result), arrayToSmall(part)];
}
function divModSmall(value, lambda) {
var length = value.length,
quotient = createArray(length),
base = BASE,
i, q, remainder, divisor;
remainder = 0;
for (i = length - 1; i >= 0; --i) {
divisor = remainder * base + value[i];
q = truncate(divisor / lambda);
remainder = divisor - q * lambda;
quotient[i] = q | 0;
}
return [quotient, remainder | 0];
}
function divModAny(self, v) {
var value, n = parseValue(v);
if (supportsNativeBigInt) {
return [new NativeBigInt(self.value / n.value), new NativeBigInt(self.value % n.value)];
}
var a = self.value, b = n.value;
var quotient;
if (b === 0) throw new Error("Cannot divide by zero");
if (self.isSmall) {
if (n.isSmall) {
return [new SmallInteger(truncate(a / b)), new SmallInteger(a % b)];
}
return [Integer[0], self];
}
if (n.isSmall) {
if (b === 1) return [self, Integer[0]];
if (b == -1) return [self.negate(), Integer[0]];
var abs = Math.abs(b);
if (abs < BASE) {
value = divModSmall(a, abs);
quotient = arrayToSmall(value[0]);
var remainder = value[1];
if (self.sign) remainder = -remainder;
if (typeof quotient === "number") {
if (self.sign !== n.sign) quotient = -quotient;
return [new SmallInteger(quotient), new SmallInteger(remainder)];
}
return [new BigInteger(quotient, self.sign !== n.sign), new SmallInteger(remainder)];
}
b = smallToArray(abs);
}
var comparison = compareAbs(a, b);
if (comparison === -1) return [Integer[0], self];
if (comparison === 0) return [Integer[self.sign === n.sign ? 1 : -1], Integer[0]];
// divMod1 is faster on smaller input sizes
if (a.length + b.length <= 200)
value = divMod1(a, b);
else value = divMod2(a, b);
quotient = value[0];
var qSign = self.sign !== n.sign,
mod = value[1],
mSign = self.sign;
if (typeof quotient === "number") {
if (qSign) quotient = -quotient;
quotient = new SmallInteger(quotient);
} else quotient = new BigInteger(quotient, qSign);
if (typeof mod === "number") {
if (mSign) mod = -mod;
mod = new SmallInteger(mod);
} else mod = new BigInteger(mod, mSign);
return [quotient, mod];
}
BigInteger.prototype.divmod = function (v) {
var result = divModAny(this, v);
return {
quotient: result[0],
remainder: result[1]
};
};
NativeBigInt.prototype.divmod = SmallInteger.prototype.divmod = BigInteger.prototype.divmod;
BigInteger.prototype.divide = function (v) {
return divModAny(this, v)[0];
};
NativeBigInt.prototype.over = NativeBigInt.prototype.divide = function (v) {
return new NativeBigInt(this.value / parseValue(v).value);
};
SmallInteger.prototype.over = SmallInteger.prototype.divide = BigInteger.prototype.over = BigInteger.prototype.divide;
BigInteger.prototype.mod = function (v) {
return divModAny(this, v)[1];
};
NativeBigInt.prototype.mod = NativeBigInt.prototype.remainder = function (v) {
return new NativeBigInt(this.value % parseValue(v).value);
};
SmallInteger.prototype.remainder = SmallInteger.prototype.mod = BigInteger.prototype.remainder = BigInteger.prototype.mod;
BigInteger.prototype.pow = function (v) {
var n = parseValue(v),
a = this.value,
b = n.value,
value, x, y;
if (b === 0) return Integer[1];
if (a === 0) return Integer[0];
if (a === 1) return Integer[1];
if (a === -1) return n.isEven() ? Integer[1] : Integer[-1];
if (n.sign) {
return Integer[0];
}
if (!n.isSmall) throw new Error("The exponent " + n.toString() + " is too large.");
if (this.isSmall) {
if (isPrecise(value = Math.pow(a, b)))
return new SmallInteger(truncate(value));
}
x = this;
y = Integer[1];
while (true) {
if (b & 1 === 1) {
y = y.times(x);
--b;
}
if (b === 0) break;
b /= 2;
x = x.square();
}
return y;
};
SmallInteger.prototype.pow = BigInteger.prototype.pow;
NativeBigInt.prototype.pow = function (v) {
var n = parseValue(v);
var a = this.value, b = n.value;
var _0 = BigInt(0), _1 = BigInt(1), _2 = BigInt(2);
if (b === _0) return Integer[1];
if (a === _0) return Integer[0];
if (a === _1) return Integer[1];
if (a === BigInt(-1)) return n.isEven() ? Integer[1] : Integer[-1];
if (n.isNegative()) return new NativeBigInt(_0);
var x = this;
var y = Integer[1];
while (true) {
if ((b & _1) === _1) {
y = y.times(x);
--b;
}
if (b === _0) break;
b /= _2;
x = x.square();
}
return y;
}
BigInteger.prototype.modPow = function (exp, mod) {
exp = parseValue(exp);
mod = parseValue(mod);
if (mod.isZero()) throw new Error("Cannot take modPow with modulus 0");
var r = Integer[1],
base = this.mod(mod);
while (exp.isPositive()) {
if (base.isZero()) return Integer[0];
if (exp.isOdd()) r = r.multiply(base).mod(mod);
exp = exp.divide(2);
base = base.square().mod(mod);
}
return r;
};
NativeBigInt.prototype.modPow = SmallInteger.prototype.modPow = BigInteger.prototype.modPow;
function compareAbs(a, b) {
if (a.length !== b.length) {
return a.length > b.length ? 1 : -1;
}
for (var i = a.length - 1; i >= 0; i--) {
if (a[i] !== b[i]) return a[i] > b[i] ? 1 : -1;
}
return 0;
}
BigInteger.prototype.compareAbs = function (v) {
var n = parseValue(v),
a = this.value,
b = n.value;
if (n.isSmall) return 1;
return compareAbs(a, b);
};
SmallInteger.prototype.compareAbs = function (v) {
var n = parseValue(v),
a = Math.abs(this.value),
b = n.value;
if (n.isSmall) {
b = Math.abs(b);
return a === b ? 0 : a > b ? 1 : -1;
}
return -1;
};
NativeBigInt.prototype.compareAbs = function (v) {
var a = this.value;
var b = parseValue(v).value;
a = a >= 0 ? a : -a;
b = b >= 0 ? b : -b;
return a === b ? 0 : a > b ? 1 : -1;
}
BigInteger.prototype.compare = function (v) {
// See discussion about comparison with Infinity:
// https://github.com/peterolson/BigInteger.js/issues/61
if (v === Infinity) {
return -1;
}
if (v === -Infinity) {
return 1;
}
var n = parseValue(v),
a = this.value,
b = n.value;
if (this.sign !== n.sign) {
return n.sign ? 1 : -1;
}
if (n.isSmall) {
return this.sign ? -1 : 1;
}
return compareAbs(a, b) * (this.sign ? -1 : 1);
};
BigInteger.prototype.compareTo = BigInteger.prototype.compare;
SmallInteger.prototype.compare = function (v) {
if (v === Infinity) {
return -1;
}
if (v === -Infinity) {
return 1;
}
var n = parseValue(v),
a = this.value,
b = n.value;
if (n.isSmall) {
return a == b ? 0 : a > b ? 1 : -1;
}
if (a < 0 !== n.sign) {
return a < 0 ? -1 : 1;
}
return a < 0 ? 1 : -1;
};
SmallInteger.prototype.compareTo = SmallInteger.prototype.compare;
NativeBigInt.prototype.compare = function (v) {
if (v === Infinity) {
return -1;
}
if (v === -Infinity) {
return 1;
}
var a = this.value;
var b = parseValue(v).value;
return a === b ? 0 : a > b ? 1 : -1;
}
NativeBigInt.prototype.compareTo = NativeBigInt.prototype.compare;
BigInteger.prototype.equals = function (v) {
return this.compare(v) === 0;
};
NativeBigInt.prototype.eq = NativeBigInt.prototype.equals = SmallInteger.prototype.eq = SmallInteger.prototype.equals = BigInteger.prototype.eq = BigInteger.prototype.equals;
BigInteger.prototype.notEquals = function (v) {
return this.compare(v) !== 0;
};
NativeBigInt.prototype.neq = NativeBigInt.prototype.notEquals = SmallInteger.prototype.neq = SmallInteger.prototype.notEquals = BigInteger.prototype.neq = BigInteger.prototype.notEquals;
BigInteger.prototype.greater = function (v) {
return this.compare(v) > 0;
};
NativeBigInt.prototype.gt = NativeBigInt.prototype.greater = SmallInteger.prototype.gt = SmallInteger.prototype.greater = BigInteger.prototype.gt = BigInteger.prototype.greater;
BigInteger.prototype.lesser = function (v) {
return this.compare(v) < 0;
};
NativeBigInt.prototype.lt = NativeBigInt.prototype.lesser = SmallInteger.prototype.lt = SmallInteger.prototype.lesser = BigInteger.prototype.lt = BigInteger.prototype.lesser;
BigInteger.prototype.greaterOrEquals = function (v) {
return this.compare(v) >= 0;
};
NativeBigInt.prototype.geq = NativeBigInt.prototype.greaterOrEquals = SmallInteger.prototype.geq = SmallInteger.prototype.greaterOrEquals = BigInteger.prototype.geq = BigInteger.prototype.greaterOrEquals;
BigInteger.prototype.lesserOrEquals = function (v) {
return this.compare(v) <= 0;
};
NativeBigInt.prototype.leq = NativeBigInt.prototype.lesserOrEquals = SmallInteger.prototype.leq = SmallInteger.prototype.lesserOrEquals = BigInteger.prototype.leq = BigInteger.prototype.lesserOrEquals;
BigInteger.prototype.isEven = function () {
return (this.value[0] & 1) === 0;
};
SmallInteger.prototype.isEven = function () {
return (this.value & 1) === 0;
};
NativeBigInt.prototype.isEven = function () {
return (this.value & BigInt(1)) === BigInt(0);
}
BigInteger.prototype.isOdd = function () {
return (this.value[0] & 1) === 1;
};
SmallInteger.prototype.isOdd = function () {
return (this.value & 1) === 1;
};
NativeBigInt.prototype.isOdd = function () {
return (this.value & BigInt(1)) === BigInt(1);
}
BigInteger.prototype.isPositive = function () {
return !this.sign;
};
SmallInteger.prototype.isPositive = function () {
return this.value > 0;
};
NativeBigInt.prototype.isPositive = SmallInteger.prototype.isPositive;
BigInteger.prototype.isNegative = function () {
return this.sign;
};
SmallInteger.prototype.isNegative = function () {
return this.value < 0;
};
NativeBigInt.prototype.isNegative = SmallInteger.prototype.isNegative;
BigInteger.prototype.isUnit = function () {
return false;
};
SmallInteger.prototype.isUnit = function () {
return Math.abs(this.value) === 1;
};
NativeBigInt.prototype.isUnit = function () {
return this.abs().value === BigInt(1);
}
BigInteger.prototype.isZero = function () {
return false;
};
SmallInteger.prototype.isZero = function () {
return this.value === 0;
};
NativeBigInt.prototype.isZero = function () {
return this.value === BigInt(0);
}
BigInteger.prototype.isDivisibleBy = function (v) {
var n = parseValue(v);
if (n.isZero()) return false;
if (n.isUnit()) return true;
if (n.compareAbs(2) === 0) return this.isEven();
return this.mod(n).isZero();
};
NativeBigInt.prototype.isDivisibleBy = SmallInteger.prototype.isDivisibleBy = BigInteger.prototype.isDivisibleBy;
function isBasicPrime(v) {
var n = v.abs();
if (n.isUnit()) return false;
if (n.equals(2) || n.equals(3) || n.equals(5)) return true;
if (n.isEven() || n.isDivisibleBy(3) || n.isDivisibleBy(5)) return false;
if (n.lesser(49)) return true;
// we don't know if it's prime: let the other functions figure it out
}
function millerRabinTest(n, a) {
var nPrev = n.prev(),
b = nPrev,
r = 0,
d, t, i, x;
while (b.isEven()) b = b.divide(2), r++;
next: for (i = 0; i < a.length; i++) {
if (n.lesser(a[i])) continue;
x = bigInt(a[i]).modPow(b, n);
if (x.isUnit() || x.equals(nPrev)) continue;
for (d = r - 1; d != 0; d--) {
x = x.square().mod(n);
if (x.isUnit()) return false;
if (x.equals(nPrev)) continue next;
}
return false;
}
return true;
}
// Set "strict" to true to force GRH-supported lower bound of 2*log(N)^2
BigInteger.prototype.isPrime = function (strict) {
var isPrime = isBasicPrime(this);
if (isPrime !== undefined) return isPrime;
var n = this.abs();
var bits = n.bitLength();
if (bits <= 64)
return millerRabinTest(n, [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37]);
var logN = Math.log(2) * bits.toJSNumber();
var t = Math.ceil((strict === true) ? (2 * Math.pow(logN, 2)) : logN);
for (var a = [], i = 0; i < t; i++) {
a.push(bigInt(i + 2));
}
return millerRabinTest(n, a);
};
NativeBigInt.prototype.isPrime = SmallInteger.prototype.isPrime = BigInteger.prototype.isPrime;
BigInteger.prototype.isProbablePrime = function (iterations) {
var isPrime = isBasicPrime(this);
if (isPrime !== undefined) return isPrime;
var n = this.abs();
var t = iterations === undefined ? 5 : iterations;
for (var a = [], i = 0; i < t; i++) {
a.push(bigInt.randBetween(2, n.minus(2)));
}
return millerRabinTest(n, a);
};
NativeBigInt.prototype.isProbablePrime = SmallInteger.prototype.isProbablePrime = BigInteger.prototype.isProbablePrime;
BigInteger.prototype.modInv = function (n) {
var t = bigInt.zero, newT = bigInt.one, r = parseValue(n), newR = this.abs(), q, lastT, lastR;
while (!newR.isZero()) {
q = r.divide(newR);
lastT = t;
lastR = r;
t = newT;
r = newR;
newT = lastT.subtract(q.multiply(newT));
newR = lastR.subtract(q.multiply(newR));
}
if (!r.isUnit()) throw new Error(this.toString() + " and " + n.toString() + " are not co-prime");
if (t.compare(0) === -1) {
t = t.add(n);
}
if (this.isNegative()) {
return t.negate();
}
return t;
};
NativeBigInt.prototype.modInv = SmallInteger.prototype.modInv = BigInteger.prototype.modInv;
BigInteger.prototype.next = function () {
var value = this.value;
if (this.sign) {
return subtractSmall(value, 1, this.sign);
}
return new BigInteger(addSmall(value, 1), this.sign);
};
SmallInteger.prototype.next = function () {
var value = this.value;
if (value + 1 < MAX_INT) return new SmallInteger(value + 1);
return new BigInteger(MAX_INT_ARR, false);
};
NativeBigInt.prototype.next = function () {
return new NativeBigInt(this.value + BigInt(1));
}
BigInteger.prototype.prev = function () {
var value = this.value;
if (this.sign) {
return new BigInteger(addSmall(value, 1), true);
}
return subtractSmall(value, 1, this.sign);
};
SmallInteger.prototype.prev = function () {
var value = this.value;
if (value - 1 > -MAX_INT) return new SmallInteger(value - 1);
return new BigInteger(MAX_INT_ARR, true);
};
NativeBigInt.prototype.prev = function () {
return new NativeBigInt(this.value - BigInt(1));
}
var powersOfTwo = [1];
while (2 * powersOfTwo[powersOfTwo.length - 1] <= BASE) powersOfTwo.push(2 * powersOfTwo[powersOfTwo.length - 1]);
var powers2Length = powersOfTwo.length, highestPower2 = powersOfTwo[powers2Length - 1];
function shift_isSmall(n) {
return Math.abs(n) <= BASE;
}
BigInteger.prototype.shiftLeft = function (v) {
var n = parseValue(v).toJSNumber();
if (!shift_isSmall(n)) {
throw new Error(String(n) + " is too large for shifting.");
}
if (n < 0) return this.shiftRight(-n);
var result = this;
if (result.isZero()) return result;
while (n >= powers2Length) {
result = result.multiply(highestPower2);
n -= powers2Length - 1;
}
return result.multiply(powersOfTwo[n]);
};
NativeBigInt.prototype.shiftLeft = SmallInteger.prototype.shiftLeft = BigInteger.prototype.shiftLeft;
BigInteger.prototype.shiftRight = function (v) {
var remQuo;
var n = parseValue(v).toJSNumber();
if (!shift_isSmall(n)) {
throw new Error(String(n) + " is too large for shifting.");
}
if (n < 0) return this.shiftLeft(-n);
var result = this;
while (n >= powers2Length) {
if (result.isZero() || (result.isNegative() && result.isUnit())) return result;
remQuo = divModAny(result, highestPower2);
result = remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0];
n -= powers2Length - 1;
}
remQuo = divModAny(result, powersOfTwo[n]);
return remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0];
};
NativeBigInt.prototype.shiftRight = SmallInteger.prototype.shiftRight = BigInteger.prototype.shiftRight;
function bitwise(x, y, fn) {
y = parseValue(y);
var xSign = x.isNegative(), ySign = y.isNegative();
var xRem = xSign ? x.not() : x,
yRem = ySign ? y.not() : y;
var xDigit = 0, yDigit = 0;
var xDivMod = null, yDivMod = null;
var result = [];
while (!xRem.isZero() || !yRem.isZero()) {
xDivMod = divModAny(xRem, highestPower2);
xDigit = xDivMod[1].toJSNumber();
if (xSign) {
xDigit = highestPower2 - 1 - xDigit; // two's complement for negative numbers
}
yDivMod = divModAny(yRem, highestPower2);
yDigit = yDivMod[1].toJSNumber();
if (ySign) {
yDigit = highestPower2 - 1 - yDigit; // two's complement for negative numbers
}
xRem = xDivMod[0];
yRem = yDivMod[0];
result.push(fn(xDigit, yDigit));
}
var sum = fn(xSign ? 1 : 0, ySign ? 1 : 0) !== 0 ? bigInt(-1) : bigInt(0);
for (var i = result.length - 1; i >= 0; i -= 1) {
sum = sum.multiply(highestPower2).add(bigInt(result[i]));
}
return sum;
}
BigInteger.prototype.not = function () {
return this.negate().prev();
};
NativeBigInt.prototype.not = SmallInteger.prototype.not = BigInteger.prototype.not;
BigInteger.prototype.and = function (n) {
return bitwise(this, n, function (a, b) { return a & b; });
};
NativeBigInt.prototype.and = SmallInteger.prototype.and = BigInteger.prototype.and;
BigInteger.prototype.or = function (n) {
return bitwise(this, n, function (a, b) { return a | b; });
};
NativeBigInt.prototype.or = SmallInteger.prototype.or = BigInteger.prototype.or;
BigInteger.prototype.xor = function (n) {
return bitwise(this, n, function (a, b) { return a ^ b; });
};
NativeBigInt.prototype.xor = SmallInteger.prototype.xor = BigInteger.prototype.xor;
var LOBMASK_I = 1 << 30, LOBMASK_BI = (BASE & -BASE) * (BASE & -BASE) | LOBMASK_I;
function roughLOB(n) { // get lowestOneBit (rough)
// SmallInteger: return Min(lowestOneBit(n), 1 << 30)
// BigInteger: return Min(lowestOneBit(n), 1 << 14) [BASE=1e7]
var v = n.value,
x = typeof v === "number" ? v | LOBMASK_I :
typeof v === "bigint" ? v | BigInt(LOBMASK_I) :
v[0] + v[1] * BASE | LOBMASK_BI;
return x & -x;
}
function integerLogarithm(value, base) {
if (base.compareTo(value) <= 0) {
var tmp = integerLogarithm(value, base.square(base));
var p = tmp.p;
var e = tmp.e;
var t = p.multiply(base);
return t.compareTo(value) <= 0 ? { p: t, e: e * 2 + 1 } : { p: p, e: e * 2 };
}
return { p: bigInt(1), e: 0 };
}
BigInteger.prototype.bitLength = function () {
var n = this;
if (n.compareTo(bigInt(0)) < 0) {
n = n.negate().subtract(bigInt(1));
}
if (n.compareTo(bigInt(0)) === 0) {
return bigInt(0);
}
return bigInt(integerLogarithm(n, bigInt(2)).e).add(bigInt(1));
}
NativeBigInt.prototype.bitLength = SmallInteger.prototype.bitLength = BigInteger.prototype.bitLength;
function max(a, b) {
a = parseValue(a);
b = parseValue(b);
return a.greater(b) ? a : b;
}
function min(a, b) {
a = parseValue(a);
b = parseValue(b);
return a.lesser(b) ? a : b;
}
function gcd(a, b) {
a = parseValue(a).abs();
b = parseValue(b).abs();
if (a.equals(b)) return a;
if (a.isZero()) return b;
if (b.isZero()) return a;
var c = Integer[1], d, t;
while (a.isEven() && b.isEven()) {
d = min(roughLOB(a), roughLOB(b));
a = a.divide(d);
b = b.divide(d);
c = c.multiply(d);
}
while (a.isEven()) {
a = a.divide(roughLOB(a));
}
do {
while (b.isEven()) {
b = b.divide(roughLOB(b));
}
if (a.greater(b)) {
t = b; b = a; a = t;
}
b = b.subtract(a);
} while (!b.isZero());
return c.isUnit() ? a : a.multiply(c);
}
function lcm(a, b) {
a = parseValue(a).abs();
b = parseValue(b).abs();
return a.divide(gcd(a, b)).multiply(b);
}
function randBetween(a, b) {
a = parseValue(a);
b = parseValue(b);
var low = min(a, b), high = max(a, b);
var range = high.subtract(low).add(1);
if (range.isSmall) return low.add(Math.floor(Math.random() * range));
var digits = toBase(range, BASE).value;
var result = [], restricted = true;
for (var i = 0; i < digits.length; i++) {
var top = restricted ? digits[i] : BASE;
var digit = truncate(Math.random() * top);
result.push(digit);
if (digit < top) restricted = false;
}
return low.add(Integer.fromArray(result, BASE, false));
}
var parseBase = function (text, base, alphabet, caseSensitive) {
alphabet = alphabet || DEFAULT_ALPHABET;
text = String(text);
if (!caseSensitive) {
text = text.toLowerCase();
alphabet = alphabet.toLowerCase();
}
var length = text.length;
var i;
var absBase = Math.abs(base);
var alphabetValues = {};
for (i = 0; i < alphabet.length; i++) {
alphabetValues[alphabet[i]] = i;
}
for (i = 0; i < length; i++) {
var c = text[i];
if (c === "-") continue;
if (c in alphabetValues) {
if (alphabetValues[c] >= absBase) {
if (c === "1" && absBase === 1) continue;
throw new Error(c + " is not a valid digit in base " + base + ".");
}
}
}
base = parseValue(base);
var digits = [];
var isNegative = text[0] === "-";
for (i = isNegative ? 1 : 0; i < text.length; i++) {
var c = text[i];
if (c in alphabetValues) digits.push(parseValue(alphabetValues[c]));
else if (c === "<") {
var start = i;
do { i++; } while (text[i] !== ">" && i < text.length);
digits.push(parseValue(text.slice(start + 1, i)));
}
else throw new Error(c + " is not a valid character");
}
return parseBaseFromArray(digits, base, isNegative);
};
function parseBaseFromArray(digits, base, isNegative) {
var val = Integer[0], pow = Integer[1], i;
for (i = digits.length - 1; i >= 0; i--) {
val = val.add(digits[i].times(pow));
pow = pow.times(base);
}
return isNegative ? val.negate() : val;
}
function stringify(digit, alphabet) {
alphabet = alphabet || DEFAULT_ALPHABET;
if (digit < alphabet.length) {
return alphabet[digit];
}
return "<" + digit + ">";
}
function toBase(n, base) {
base = bigInt(base);
if (base.isZero()) {
if (n.isZero()) return { value: [0], isNegative: false };
throw new Error("Cannot convert nonzero numbers to base 0.");
}
if (base.equals(-1)) {
if (n.isZero()) return { value: [0], isNegative: false };
if (n.isNegative())
return {
value: [].concat.apply([], Array.apply(null, Array(-n.toJSNumber()))
.map(Array.prototype.valueOf, [1, 0])
),
isNegative: false
};
var arr = Array.apply(null, Array(n.toJSNumber() - 1))
.map(Array.prototype.valueOf, [0, 1]);
arr.unshift([1]);
return {
value: [].concat.apply([], arr),
isNegative: false
};
}
var neg = false;
if (n.isNegative() && base.isPositive()) {
neg = true;
n = n.abs();
}
if (base.isUnit()) {
if (n.isZero()) return { value: [0], isNegative: false };
return {
value: Array.apply(null, Array(n.toJSNumber()))
.map(Number.prototype.valueOf, 1),
isNegative: neg
};
}
var out = [];
var left = n, divmod;
while (left.isNegative() || left.compareAbs(base) >= 0) {
divmod = left.divmod(base);
left = divmod.quotient;
var digit = divmod.remainder;
if (digit.isNegative()) {
digit = base.minus(digit).abs();
left = left.next();
}
out.push(digit.toJSNumber());
}
out.push(left.toJSNumber());
return { value: out.reverse(), isNegative: neg };
}
function toBaseString(n, base, alphabet) {
var arr = toBase(n, base);
return (arr.isNegative ? "-" : "") + arr.value.map(function (x) {
return stringify(x, alphabet);
}).join('');
}
BigInteger.prototype.toArray = function (radix) {
return toBase(this, radix);
};
SmallInteger.prototype.toArray = function (radix) {
return toBase(this, radix);
};
NativeBigInt.prototype.toArray = function (radix) {
return toBase(this, radix);
};
BigInteger.prototype.toString = function (radix, alphabet) {
if (radix === undefined) radix = 10;
if (radix !== 10) return toBaseString(this, radix, alphabet);
var v = this.value, l = v.length, str = String(v[--l]), zeros = "0000000", digit;
while (--l >= 0) {
digit = String(v[l]);
str += zeros.slice(digit.length) + digit;
}
var sign = this.sign ? "-" : "";
return sign + str;
};
SmallInteger.prototype.toString = function (radix, alphabet) {
if (radix === undefined) radix = 10;
if (radix != 10) return toBaseString(this, radix, alphabet);
return String(this.value);
};
NativeBigInt.prototype.toString = SmallInteger.prototype.toString;
NativeBigInt.prototype.toJSON = BigInteger.prototype.toJSON = SmallInteger.prototype.toJSON = function () { return this.toString(); }
BigInteger.prototype.valueOf = function () {
return parseInt(this.toString(), 10);
};
BigInteger.prototype.toJSNumber = BigInteger.prototype.valueOf;
SmallInteger.prototype.valueOf = function () {
return this.value;
};
SmallInteger.prototype.toJSNumber = SmallInteger.prototype.valueOf;
NativeBigInt.prototype.valueOf = NativeBigInt.prototype.toJSNumber = function () {
return parseInt(this.toString(), 10);
}
function parseStringValue(v) {
if (isPrecise(+v)) {
var x = +v;
if (x === truncate(x))
return supportsNativeBigInt ? new NativeBigInt(BigInt(x)) : new SmallInteger(x);
throw new Error("Invalid integer: " + v);
}
var sign = v[0] === "-";
if (sign) v = v.slice(1);
var split = v.split(/e/i);
if (split.length > 2) throw new Error("Invalid integer: " + split.join("e"));
if (split.length === 2) {
var exp = split[1];
if (exp[0] === "+") exp = exp.slice(1);
exp = +exp;
if (exp !== truncate(exp) || !isPrecise(exp)) throw new Error("Invalid integer: " + exp + " is not a valid exponent.");
var text = split[0];
var decimalPlace = text.indexOf(".");
if (decimalPlace >= 0) {
exp -= text.length - decimalPlace - 1;
text = text.slice(0, decimalPlace) + text.slice(decimalPlace + 1);
}
if (exp < 0) throw new Error("Cannot include negative exponent part for integers");
text += (new Array(exp + 1)).join("0");
v = text;
}
var isValid = /^([0-9][0-9]*)$/.test(v);
if (!isValid) throw new Error("Invalid integer: " + v);
if (supportsNativeBigInt) {
return new NativeBigInt(BigInt(sign ? "-" + v : v));
}
var r = [], max = v.length, l = LOG_BASE, min = max - l;
while (max > 0) {
r.push(+v.slice(min, max));
min -= l;
if (min < 0) min = 0;
max -= l;
}
trim(r);
return new BigInteger(r, sign);
}
function parseNumberValue(v) {
if (supportsNativeBigInt) {
return new NativeBigInt(BigInt(v));
}
if (isPrecise(v)) {
if (v !== truncate(v)) throw new Error(v + " is not an integer.");
return new SmallInteger(v);
}
return parseStringValue(v.toString());
}
function parseValue(v) {
if (typeof v === "number") {
return parseNumberValue(v);
}
if (typeof v === "string") {
return parseStringValue(v);
}
if (typeof v === "bigint") {
return new NativeBigInt(v);
}
return v;
}
// Pre-define numbers in range [-999,999]
for (var i = 0; i < 1000; i++) {
Integer[i] = parseValue(i);
if (i > 0) Integer[-i] = parseValue(-i);
}
// Backwards compatibility
Integer.one = Integer[1];
Integer.zero = Integer[0];
Integer.minusOne = Integer[-1];
Integer.max = max;
Integer.min = min;
Integer.gcd = gcd;
Integer.lcm = lcm;
Integer.isInstance = function (x) { return x instanceof BigInteger || x instanceof SmallInteger || x instanceof NativeBigInt; };
Integer.randBetween = randBetween;
Integer.fromArray = function (digits, base, isNegative) {
return parseBaseFromArray(digits.map(parseValue), parseValue(base || 10), isNegative);
};
return Integer;
})();
// Node.js check
if (typeof module !== "undefined" && module.hasOwnProperty("exports")) {
module.exports = bigInt;
}
//amd check
if (typeof define === "function" && define.amd) {
define("big-integer", [], function () {
return bigInt;
});
}
},{}],4:[function(require,module,exports){
(function (process){
/*
Copyright 2019 0KIMS association.
This file is part of websnark (Web Assembly zkSnark Prover).
websnark is a free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
websnark is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with websnark. If not, see .
*/
/* globals WebAssembly, Blob, Worker, navigator, Promise, window */
const bigInt = require("big-integer");
const groth16_wasm = require("../build/groth16_wasm.js");
const assert = require("assert");
const inBrowser = (typeof window !== "undefined");
let NodeWorker;
let NodeCrypto;
if (!inBrowser) {
NodeWorker = require("worker_threads").Worker;
NodeCrypto = require("crypto");
}
class Deferred {
constructor() {
this.promise = new Promise((resolve, reject)=> {
this.reject = reject;
this.resolve = resolve;
});
}
}
/*
function delay(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
*/
function thread(self) {
let instance;
let memory;
let i32;
async function init(data) {
const code = new Uint8Array(data.code);
const wasmModule = await WebAssembly.compile(code);
memory = new WebAssembly.Memory({initial:data.init});
i32 = new Uint32Array(memory.buffer);
instance = await WebAssembly.instantiate(wasmModule, {
env: {
"memory": memory
}
});
}
function alloc(length) {
while (i32[0] & 3) i32[0]++; // Return always aligned pointers
const res = i32[0];
i32[0] += length;
return res;
}
function putBin(b) {
const p = alloc(b.byteLength);
const s32 = new Uint32Array(b);
i32.set(s32, p/4);
return p;
}
function getBin(p, l) {
return memory.buffer.slice(p, p+l);
}
self.onmessage = function(e) {
let data;
if (e.data) {
data = e.data;
} else {
data = e;
}
if (data.command == "INIT") {
init(data).then(function() {
self.postMessage(data.result);
});
} else if (data.command == "G1_MULTIEXP") {
const oldAlloc = i32[0];
const pScalars = putBin(data.scalars);
const pPoints = putBin(data.points);
const pRes = alloc(96);
instance.exports.g1_zero(pRes);
instance.exports.g1_multiexp2(pScalars, pPoints, data.n, 7, pRes);
data.result = getBin(pRes, 96);
i32[0] = oldAlloc;
self.postMessage(data.result, [data.result]);
} else if (data.command == "G2_MULTIEXP") {
const oldAlloc = i32[0];
const pScalars = putBin(data.scalars);
const pPoints = putBin(data.points);
const pRes = alloc(192);
instance.exports.g2_zero(pRes);
instance.exports.g2_multiexp(pScalars, pPoints, data.n, 7, pRes);
data.result = getBin(pRes, 192);
i32[0] = oldAlloc;
self.postMessage(data.result, [data.result]);
} else if (data.command == "CALC_H") {
const oldAlloc = i32[0];
const pSignals = putBin(data.signals);
const pPolsA = putBin(data.polsA);
const pPolsB = putBin(data.polsB);
const nSignals = data.nSignals;
const domainSize = data.domainSize;
const pSignalsM = alloc(nSignals*32);
const pPolA = alloc(domainSize*32);
const pPolB = alloc(domainSize*32);
const pPolA2 = alloc(domainSize*32*2);
const pPolB2 = alloc(domainSize*32*2);
instance.exports.fft_toMontgomeryN(pSignals, pSignalsM, nSignals);
instance.exports.pol_zero(pPolA, domainSize);
instance.exports.pol_zero(pPolB, domainSize);
instance.exports.pol_constructLC(pPolsA, pSignalsM, nSignals, pPolA);
instance.exports.pol_constructLC(pPolsB, pSignalsM, nSignals, pPolB);
instance.exports.fft_copyNInterleaved(pPolA, pPolA2, domainSize);
instance.exports.fft_copyNInterleaved(pPolB, pPolB2, domainSize);
instance.exports.fft_ifft(pPolA, domainSize, 0);
instance.exports.fft_ifft(pPolB, domainSize, 0);
instance.exports.fft_fft(pPolA, domainSize, 1);
instance.exports.fft_fft(pPolB, domainSize, 1);
instance.exports.fft_copyNInterleaved(pPolA, pPolA2+32, domainSize);
instance.exports.fft_copyNInterleaved(pPolB, pPolB2+32, domainSize);
instance.exports.fft_mulN(pPolA2, pPolB2, domainSize*2, pPolA2);
instance.exports.fft_ifft(pPolA2, domainSize*2, 0);
instance.exports.fft_fromMontgomeryN(pPolA2+domainSize*32, pPolA2+domainSize*32, domainSize);
data.result = getBin(pPolA2+domainSize*32, domainSize*32);
i32[0] = oldAlloc;
self.postMessage(data.result, [data.result]);
} else if (data.command == "TERMINATE") {
process.exit();
}
};
}
async function build() {
const groth16 = new Groth16();
groth16.q = bigInt("21888242871839275222246405745257275088696311157297823662689037894645226208583");
groth16.r = bigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617");
groth16.n64 = Math.floor((groth16.q.minus(1).bitLength() - 1)/64) +1;
groth16.n32 = groth16.n64*2;
groth16.n8 = groth16.n64*8;
groth16.memory = new WebAssembly.Memory({initial:1000});
groth16.i32 = new Uint32Array(groth16.memory.buffer);
const wasmModule = await WebAssembly.compile(groth16_wasm.code);
groth16.instance = await WebAssembly.instantiate(wasmModule, {
env: {
"memory": groth16.memory
}
});
groth16.pq = groth16_wasm.pq;
groth16.pr = groth16_wasm.pr;
groth16.pr0 = groth16.alloc(192);
groth16.pr1 = groth16.alloc(192);
groth16.workers = [];
groth16.pendingDeferreds = [];
groth16.working = [];
let concurrency;
if ((typeof(navigator) === "object") && navigator.hardwareConcurrency) {
concurrency = navigator.hardwareConcurrency;
} else {
concurrency = 8;
}
function getOnMsg(i) {
return function(e) {
let data;
if ((e)&&(e.data)) {
data = e.data;
} else {
data = e;
}
groth16.working[i]=false;
groth16.pendingDeferreds[i].resolve(data);
groth16.processWorks();
};
}
for (let i = 0; i 0); i++) {
if (this.working[i] == false) {
const work = this.actionQueue.shift();
this.postAction(i, work.data, work.transfers, work.deferred);
}
}
}
queueAction(actionData, transfers) {
const d = new Deferred();
this.actionQueue.push({
data: actionData,
transfers: transfers,
deferred: d
});
this.processWorks();
return d.promise;
}
alloc(length) {
while (this.i32[0] & 3) this.i32[0]++; // Return always aligned pointers
const res = this.i32[0];
this.i32[0] += length;
return res;
}
putBin(p, b) {
const s32 = new Uint32Array(b);
this.i32.set(s32, p/4);
}
getBin(p, l) {
return this.memory.buffer.slice(p, p+l);
}
bin2int(b) {
const i32 = new Uint32Array(b);
let acc = bigInt(i32[7]);
for (let i=6; i>=0; i--) {
acc = acc.shiftLeft(32);
acc = acc.add(i32[i]);
}
return acc.toString();
}
bin2g1(b) {
return [
this.bin2int(b.slice(0,32)),
this.bin2int(b.slice(32,64)),
this.bin2int(b.slice(64,96)),
];
}
bin2g2(b) {
return [
[
this.bin2int(b.slice(0,32)),
this.bin2int(b.slice(32,64))
],
[
this.bin2int(b.slice(64,96)),
this.bin2int(b.slice(96,128))
],
[
this.bin2int(b.slice(128,160)),
this.bin2int(b.slice(160,192))
],
];
}
async g1_multiexp(scalars, points) {
const nPoints = scalars.byteLength /32;
const nPointsPerThread = Math.floor(nPoints / this.workers.length);
const opPromises = [];
for (let i=0; i {
/* Debug code to print the result of h
for (let i=0; i " + a.toString());
}
*/
return this.g1_multiexp(h, pointsHExps);
});
const pA = this.g1_multiexp(signals.slice(0), pointsA);
const pB1 = this.g1_multiexp(signals.slice(0), pointsB1);
const pB2 = this.g2_multiexp(signals.slice(0), pointsB2);
const pC = this.g1_multiexp(signals.slice((nPublic+1)*32), pointsC);
const res = await Promise.all([pA, pB1, pB2, pC, pH]);
const pi_a = this.alloc(96);
const pi_b = this.alloc(192);
const pi_c = this.alloc(96);
const pib1 = this.alloc(96);
this.putBin(pi_a, res[0]);
this.putBin(pib1, res[1]);
this.putBin(pi_b, res[2]);
this.putBin(pi_c, res[3]);
const pAlfa1 = this.loadPoint1(alfa1);
const pBeta1 = this.loadPoint1(beta1);
const pDelta1 = this.loadPoint1(delta1);
const pBeta2 = this.loadPoint2(beta2);
const pDelta2 = this.loadPoint2(delta2);
let rnd = new Uint32Array(8);
const aux1 = this.alloc(96);
const aux2 = this.alloc(192);
const pr = this.alloc(32);
const ps = this.alloc(32);
if (inBrowser) {
window.crypto.getRandomValues(rnd);
this.putBin(pr, rnd);
window.crypto.getRandomValues(rnd);
this.putBin(ps, rnd);
} else {
const br = NodeCrypto.randomBytes(32);
this.putBin(pr, br);
const bs = NodeCrypto.randomBytes(32);
this.putBin(ps, bs);
}
/// Uncoment it to debug and check it works
// this.instance.exports.f1m_zero(pr);
// this.instance.exports.f1m_zero(ps);
// pi_a = pi_a + Alfa1 + r*Delta1
this.instance.exports.g1_add(pAlfa1, pi_a, pi_a);
this.instance.exports.g1_timesScalar(pDelta1, pr, 32, aux1);
this.instance.exports.g1_add(aux1, pi_a, pi_a);
// pi_b = pi_b + Beta2 + s*Delta2
this.instance.exports.g2_add(pBeta2, pi_b, pi_b);
this.instance.exports.g2_timesScalar(pDelta2, ps, 32, aux2);
this.instance.exports.g2_add(aux2, pi_b, pi_b);
// pib1 = pib1 + Beta1 + s*Delta1
this.instance.exports.g1_add(pBeta1, pib1, pib1);
this.instance.exports.g1_timesScalar(pDelta1, ps, 32, aux1);
this.instance.exports.g1_add(aux1, pib1, pib1);
// pi_c = pi_c + pH
this.putBin(aux1, res[4]);
this.instance.exports.g1_add(aux1, pi_c, pi_c);
// pi_c = pi_c + s*pi_a
this.instance.exports.g1_timesScalar(pi_a, ps, 32, aux1);
this.instance.exports.g1_add(aux1, pi_c, pi_c);
// pi_c = pi_c + r*pib1
this.instance.exports.g1_timesScalar(pib1, pr, 32, aux1);
this.instance.exports.g1_add(aux1, pi_c, pi_c);
// pi_c = pi_c - r*s*delta1
const prs = this.alloc(64);
this.instance.exports.int_mul(pr, ps, prs);
this.instance.exports.g1_timesScalar(pDelta1, prs, 64, aux1);
this.instance.exports.g1_neg(aux1, aux1);
this.instance.exports.g1_add(aux1, pi_c, pi_c);
this.instance.exports.g1_affine(pi_a, pi_a);
this.instance.exports.g2_affine(pi_b, pi_b);
this.instance.exports.g1_affine(pi_c, pi_c);
this.instance.exports.g1_fromMontgomery(pi_a, pi_a);
this.instance.exports.g2_fromMontgomery(pi_b, pi_b);
this.instance.exports.g1_fromMontgomery(pi_c, pi_c);
return {
pi_a: this.bin2g1(this.getBin(pi_a, 96)),
pi_b: this.bin2g2(this.getBin(pi_b, 192)),
pi_c: this.bin2g1(this.getBin(pi_c, 96)),
};
}
}
module.exports = build;
}).call(this,require('_process'))
},{"../build/groth16_wasm.js":1,"_process":12,"assert":5,"big-integer":3,"crypto":undefined,"worker_threads":undefined}],5:[function(require,module,exports){
(function (global){
'use strict';
// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
// original notice:
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh
* @license MIT
*/
function compare(a, b) {
if (a === b) {
return 0;
}
var x = a.length;
var y = b.length;
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i];
y = b[i];
break;
}
}
if (x < y) {
return -1;
}
if (y < x) {
return 1;
}
return 0;
}
function isBuffer(b) {
if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
return global.Buffer.isBuffer(b);
}
return !!(b != null && b._isBuffer);
}
// based on node assert, original notice:
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
var util = require('util/');
var hasOwn = Object.prototype.hasOwnProperty;
var pSlice = Array.prototype.slice;
var functionsHaveNames = (function () {
return function foo() {}.name === 'foo';
}());
function pToString (obj) {
return Object.prototype.toString.call(obj);
}
function isView(arrbuf) {
if (isBuffer(arrbuf)) {
return false;
}
if (typeof global.ArrayBuffer !== 'function') {
return false;
}
if (typeof ArrayBuffer.isView === 'function') {
return ArrayBuffer.isView(arrbuf);
}
if (!arrbuf) {
return false;
}
if (arrbuf instanceof DataView) {
return true;
}
if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
return true;
}
return false;
}
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.
var assert = module.exports = ok;
// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
// actual: actual,
// expected: expected })
var regex = /\s*function\s+([^\(\s]*)\s*/;
// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
function getName(func) {
if (!util.isFunction(func)) {
return;
}
if (functionsHaveNames) {
return func.name;
}
var str = func.toString();
var match = str.match(regex);
return match && match[1];
}
assert.AssertionError = function AssertionError(options) {
this.name = 'AssertionError';
this.actual = options.actual;
this.expected = options.expected;
this.operator = options.operator;
if (options.message) {
this.message = options.message;
this.generatedMessage = false;
} else {
this.message = getMessage(this);
this.generatedMessage = true;
}
var stackStartFunction = options.stackStartFunction || fail;
if (Error.captureStackTrace) {
Error.captureStackTrace(this, stackStartFunction);
} else {
// non v8 browsers so we can have a stacktrace
var err = new Error();
if (err.stack) {
var out = err.stack;
// try to strip useless frames
var fn_name = getName(stackStartFunction);
var idx = out.indexOf('\n' + fn_name);
if (idx >= 0) {
// once we have located the function frame
// we need to strip out everything before it (and its line)
var next_line = out.indexOf('\n', idx + 1);
out = out.substring(next_line + 1);
}
this.stack = out;
}
}
};
// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);
function truncate(s, n) {
if (typeof s === 'string') {
return s.length < n ? s : s.slice(0, n);
} else {
return s;
}
}
function inspect(something) {
if (functionsHaveNames || !util.isFunction(something)) {
return util.inspect(something);
}
var rawname = getName(something);
var name = rawname ? ': ' + rawname : '';
return '[Function' + name + ']';
}
function getMessage(self) {
return truncate(inspect(self.actual), 128) + ' ' +
self.operator + ' ' +
truncate(inspect(self.expected), 128);
}
// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.
// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided. All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.
function fail(actual, expected, message, operator, stackStartFunction) {
throw new assert.AssertionError({
message: message,
actual: actual,
expected: expected,
operator: operator,
stackStartFunction: stackStartFunction
});
}
// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;
// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.
function ok(value, message) {
if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;
// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);
assert.equal = function equal(actual, expected, message) {
if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};
// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);
assert.notEqual = function notEqual(actual, expected, message) {
if (actual == expected) {
fail(actual, expected, message, '!=', assert.notEqual);
}
};
// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);
assert.deepEqual = function deepEqual(actual, expected, message) {
if (!_deepEqual(actual, expected, false)) {
fail(actual, expected, message, 'deepEqual', assert.deepEqual);
}
};
assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
if (!_deepEqual(actual, expected, true)) {
fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
}
};
function _deepEqual(actual, expected, strict, memos) {
// 7.1. All identical values are equivalent, as determined by ===.
if (actual === expected) {
return true;
} else if (isBuffer(actual) && isBuffer(expected)) {
return compare(actual, expected) === 0;
// 7.2. If the expected value is a Date object, the actual value is
// equivalent if it is also a Date object that refers to the same time.
} else if (util.isDate(actual) && util.isDate(expected)) {
return actual.getTime() === expected.getTime();
// 7.3 If the expected value is a RegExp object, the actual value is
// equivalent if it is also a RegExp object with the same source and
// properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
} else if (util.isRegExp(actual) && util.isRegExp(expected)) {
return actual.source === expected.source &&
actual.global === expected.global &&
actual.multiline === expected.multiline &&
actual.lastIndex === expected.lastIndex &&
actual.ignoreCase === expected.ignoreCase;
// 7.4. Other pairs that do not both pass typeof value == 'object',
// equivalence is determined by ==.
} else if ((actual === null || typeof actual !== 'object') &&
(expected === null || typeof expected !== 'object')) {
return strict ? actual === expected : actual == expected;
// If both values are instances of typed arrays, wrap their underlying
// ArrayBuffers in a Buffer each to increase performance
// This optimization requires the arrays to have the same type as checked by
// Object.prototype.toString (aka pToString). Never perform binary
// comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
// bit patterns are not identical.
} else if (isView(actual) && isView(expected) &&
pToString(actual) === pToString(expected) &&
!(actual instanceof Float32Array ||
actual instanceof Float64Array)) {
return compare(new Uint8Array(actual.buffer),
new Uint8Array(expected.buffer)) === 0;
// 7.5 For all other Object pairs, including Array objects, equivalence is
// determined by having the same number of owned properties (as verified
// with Object.prototype.hasOwnProperty.call), the same set of keys
// (although not necessarily the same order), equivalent values for every
// corresponding key, and an identical 'prototype' property. Note: this
// accounts for both named and indexed properties on Arrays.
} else if (isBuffer(actual) !== isBuffer(expected)) {
return false;
} else {
memos = memos || {actual: [], expected: []};
var actualIndex = memos.actual.indexOf(actual);
if (actualIndex !== -1) {
if (actualIndex === memos.expected.indexOf(expected)) {
return true;
}
}
memos.actual.push(actual);
memos.expected.push(expected);
return objEquiv(actual, expected, strict, memos);
}
}
function isArguments(object) {
return Object.prototype.toString.call(object) == '[object Arguments]';
}
function objEquiv(a, b, strict, actualVisitedObjects) {
if (a === null || a === undefined || b === null || b === undefined)
return false;
// if one is a primitive, the other must be same
if (util.isPrimitive(a) || util.isPrimitive(b))
return a === b;
if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
return false;
var aIsArgs = isArguments(a);
var bIsArgs = isArguments(b);
if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
return false;
if (aIsArgs) {
a = pSlice.call(a);
b = pSlice.call(b);
return _deepEqual(a, b, strict);
}
var ka = objectKeys(a);
var kb = objectKeys(b);
var key, i;
// having the same number of owned properties (keys incorporates
// hasOwnProperty)
if (ka.length !== kb.length)
return false;
//the same set of keys (although not necessarily the same order),
ka.sort();
kb.sort();
//~~~cheap key test
for (i = ka.length - 1; i >= 0; i--) {
if (ka[i] !== kb[i])
return false;
}
//equivalent values for every corresponding key, and
//~~~possibly expensive deep test
for (i = ka.length - 1; i >= 0; i--) {
key = ka[i];
if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
return false;
}
return true;
}
// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);
assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
if (_deepEqual(actual, expected, false)) {
fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
}
};
assert.notDeepStrictEqual = notDeepStrictEqual;
function notDeepStrictEqual(actual, expected, message) {
if (_deepEqual(actual, expected, true)) {
fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
}
}
// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);
assert.strictEqual = function strictEqual(actual, expected, message) {
if (actual !== expected) {
fail(actual, expected, message, '===', assert.strictEqual);
}
};
// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==. assert.notStrictEqual(actual, expected, message_opt);
assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
if (actual === expected) {
fail(actual, expected, message, '!==', assert.notStrictEqual);
}
};
function expectedException(actual, expected) {
if (!actual || !expected) {
return false;
}
if (Object.prototype.toString.call(expected) == '[object RegExp]') {
return expected.test(actual);
}
try {
if (actual instanceof expected) {
return true;
}
} catch (e) {
// Ignore. The instanceof check doesn't work for arrow functions.
}
if (Error.isPrototypeOf(expected)) {
return false;
}
return expected.call({}, actual) === true;
}
function _tryBlock(block) {
var error;
try {
block();
} catch (e) {
error = e;
}
return error;
}
function _throws(shouldThrow, block, expected, message) {
var actual;
if (typeof block !== 'function') {
throw new TypeError('"block" argument must be a function');
}
if (typeof expected === 'string') {
message = expected;
expected = null;
}
actual = _tryBlock(block);
message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
(message ? ' ' + message : '.');
if (shouldThrow && !actual) {
fail(actual, expected, 'Missing expected exception' + message);
}
var userProvidedMessage = typeof message === 'string';
var isUnwantedException = !shouldThrow && util.isError(actual);
var isUnexpectedException = !shouldThrow && actual && !expected;
if ((isUnwantedException &&
userProvidedMessage &&
expectedException(actual, expected)) ||
isUnexpectedException) {
fail(actual, expected, 'Got unwanted exception' + message);
}
if ((shouldThrow && actual && expected &&
!expectedException(actual, expected)) || (!shouldThrow && actual)) {
throw actual;
}
}
// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);
assert.throws = function(block, /*optional*/error, /*optional*/message) {
_throws(true, block, error, message);
};
// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
_throws(false, block, error, message);
};
assert.ifError = function(err) { if (err) throw err; };
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
if (hasOwn.call(obj, key)) keys.push(key);
}
return keys;
};
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"util/":8}],6:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],7:[function(require,module,exports){
module.exports = function isBuffer(arg) {
return arg && typeof arg === 'object'
&& typeof arg.copy === 'function'
&& typeof arg.fill === 'function'
&& typeof arg.readUInt8 === 'function';
}
},{}],8:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
if (!isString(f)) {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function(x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j':
try {
return JSON.stringify(args[i++]);
} catch (_) {
return '[Circular]';
}
default:
return x;
}
});
for (var x = args[i]; i < len; x = args[++i]) {
if (isNull(x) || !isObject(x)) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
};
// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
// Allow for deprecating things in the process of starting up.
if (isUndefined(global.process)) {
return function() {
return exports.deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (process.throwDeprecation) {
throw new Error(msg);
} else if (process.traceDeprecation) {
console.trace(msg);
} else {
console.error(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
};
var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
if (isUndefined(debugEnviron))
debugEnviron = process.env.NODE_DEBUG || '';
set = set.toUpperCase();
if (!debugs[set]) {
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
var pid = process.pid;
debugs[set] = function() {
var msg = exports.format.apply(exports, arguments);
console.error('%s %d: %s', set, pid, msg);
};
} else {
debugs[set] = function() {};
}
}
return debugs[set];
};
/**
* Echos the value of a value. Trys to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Object} opts Optional options object that alters the output.
*/
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
// default options
var ctx = {
seen: [],
stylize: stylizeNoColor
};
// legacy...
if (arguments.length >= 3) ctx.depth = arguments[2];
if (arguments.length >= 4) ctx.colors = arguments[3];
if (isBoolean(opts)) {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
}
// set default options
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
if (isUndefined(ctx.depth)) ctx.depth = 2;
if (isUndefined(ctx.colors)) ctx.colors = false;
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
if (ctx.colors) ctx.stylize = stylizeWithColor;
return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
'white' : [37, 39],
'grey' : [90, 39],
'black' : [30, 39],
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39]
};
// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
'special': 'cyan',
'number': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red'
};
function stylizeWithColor(str, styleType) {
var style = inspect.styles[styleType];
if (style) {
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
'\u001b[' + inspect.colors[style][1] + 'm';
} else {
return str;
}
}
function stylizeNoColor(str, styleType) {
return str;
}
function arrayToHash(array) {
var hash = {};
array.forEach(function(val, idx) {
hash[val] = true;
});
return hash;
}
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (ctx.customInspect &&
value &&
isFunction(value.inspect) &&
// Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (!isString(ret)) {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
}
// Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
}
// Look up the keys of the object.
var keys = Object.keys(value);
var visibleKeys = arrayToHash(keys);
if (ctx.showHidden) {
keys = Object.getOwnPropertyNames(value);
}
// IE doesn't make error fields non-enumerable
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
if (isError(value)
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
return formatError(value);
}
// Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (isFunction(value)) {
var name = value.name ? ': ' + value.name : '';
return ctx.stylize('[Function' + name + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = '', array = false, braces = ['{', '}'];
// Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
}
// Make functions say that they are functions
if (isFunction(value)) {
var n = value.name ? ': ' + value.name : '';
base = ' [Function' + n + ']';
}
// Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toUTCString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else {
output = keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
if (isUndefined(value))
return ctx.stylize('undefined', 'undefined');
if (isString(value)) {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (isNumber(value))
return ctx.stylize('' + value, 'number');
if (isBoolean(value))
return ctx.stylize('' + value, 'boolean');
// For some reason typeof null is "object", so special case here.
if (isNull(value))
return ctx.stylize('null', 'null');
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
return output;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name, str, desc;
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
if (desc.get) {
if (desc.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (desc.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
if (!hasOwnProperty(visibleKeys, key)) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (isNull(recurseTimes)) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (isUndefined(name)) {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var numLinesEst = 0;
var length = output.reduce(function(prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] +
(base === '' ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
return Array.isArray(ar);
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return isObject(e) &&
(objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('./support/isBuffer');
function objectToString(o) {
return Object.prototype.toString.call(o);
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
function timestamp() {
var d = new Date();
var time = [pad(d.getHours()),
pad(d.getMinutes()),
pad(d.getSeconds())].join(':');
return [d.getDate(), months[d.getMonth()], time].join(' ');
}
// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};
/**
* Inherit the prototype methods from one constructor into another.
*
* The Function.prototype.inherits from lang.js rewritten as a standalone
* function (not on Function.prototype). NOTE: If this file is to be loaded
* during bootstrapping this function needs to be rewritten using some native
* functions as prototype setup using normal JavaScript does not work as
* expected during bootstrapping (see mirror.js in r114903).
*
* @param {function} ctor Constructor function which needs to inherit the
* prototype.
* @param {function} superCtor Constructor function to inherit prototype from.
*/
exports.inherits = require('inherits');
exports._extend = function(origin, add) {
// Don't do anything if add isn't an object
if (!add || !isObject(add)) return origin;
var keys = Object.keys(add);
var i = keys.length;
while (i--) {
origin[keys[i]] = add[keys[i]];
}
return origin;
};
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":7,"_process":12,"inherits":6}],9:[function(require,module,exports){
'use strict'
exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray
var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
lookup[i] = code[i]
revLookup[code.charCodeAt(i)] = i
}
// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63
function getLens (b64) {
var len = b64.length
if (len % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// Trim off extra bytes after placeholder bytes are found
// See: https://github.com/beatgammit/base64-js/issues/42
var validLen = b64.indexOf('=')
if (validLen === -1) validLen = len
var placeHoldersLen = validLen === len
? 0
: 4 - (validLen % 4)
return [validLen, placeHoldersLen]
}
// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function _byteLength (b64, validLen, placeHoldersLen) {
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function toByteArray (b64) {
var tmp
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
var curByte = 0
// if there are placeholders, only get up to the last complete 4 chars
var len = placeHoldersLen > 0
? validLen - 4
: validLen
for (var i = 0; i < len; i += 4) {
tmp =
(revLookup[b64.charCodeAt(i)] << 18) |
(revLookup[b64.charCodeAt(i + 1)] << 12) |
(revLookup[b64.charCodeAt(i + 2)] << 6) |
revLookup[b64.charCodeAt(i + 3)]
arr[curByte++] = (tmp >> 16) & 0xFF
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 2) {
tmp =
(revLookup[b64.charCodeAt(i)] << 2) |
(revLookup[b64.charCodeAt(i + 1)] >> 4)
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 1) {
tmp =
(revLookup[b64.charCodeAt(i)] << 10) |
(revLookup[b64.charCodeAt(i + 1)] << 4) |
(revLookup[b64.charCodeAt(i + 2)] >> 2)
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = tmp & 0xFF
}
return arr
}
function tripletToBase64 (num) {
return lookup[num >> 18 & 0x3F] +
lookup[num >> 12 & 0x3F] +
lookup[num >> 6 & 0x3F] +
lookup[num & 0x3F]
}
function encodeChunk (uint8, start, end) {
var tmp
var output = []
for (var i = start; i < end; i += 3) {
tmp =
((uint8[i] << 16) & 0xFF0000) +
((uint8[i + 1] << 8) & 0xFF00) +
(uint8[i + 2] & 0xFF)
output.push(tripletToBase64(tmp))
}
return output.join('')
}
function fromByteArray (uint8) {
var tmp
var len = uint8.length
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
var parts = []
var maxChunkLength = 16383 // must be multiple of 3
// go through the array every three bytes, we'll deal with trailing stuff later
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
parts.push(encodeChunk(
uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
))
}
// pad the end with zeros, but make sure to not forget the extra bytes
if (extraBytes === 1) {
tmp = uint8[len - 1]
parts.push(
lookup[tmp >> 2] +
lookup[(tmp << 4) & 0x3F] +
'=='
)
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + uint8[len - 1]
parts.push(
lookup[tmp >> 10] +
lookup[(tmp >> 4) & 0x3F] +
lookup[(tmp << 2) & 0x3F] +
'='
)
}
return parts.join('')
}
},{}],10:[function(require,module,exports){
(function (Buffer){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh
* @license MIT
*/
/* eslint-disable no-proto */
'use strict'
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Print warning and recommend using `buffer` v4.x which has an Object
* implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* We report that the browser does not support typed arrays if the are not subclassable
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
* for __proto__ and has a buggy typed array implementation.
*/
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
typeof console.error === 'function') {
console.error(
'This browser lacks typed array (Uint8Array) support which is required by ' +
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
)
}
function typedArraySupport () {
// Can typed array instances can be augmented?
try {
var arr = new Uint8Array(1)
arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
return arr.foo() === 42
} catch (e) {
return false
}
}
Object.defineProperty(Buffer.prototype, 'parent', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.buffer
}
})
Object.defineProperty(Buffer.prototype, 'offset', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.byteOffset
}
})
function createBuffer (length) {
if (length > K_MAX_LENGTH) {
throw new RangeError('The value "' + length + '" is invalid for option "size"')
}
// Return an augmented `Uint8Array` instance
var buf = new Uint8Array(length)
buf.__proto__ = Buffer.prototype
return buf
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer (arg, encodingOrOffset, length) {
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new TypeError(
'The "string" argument must be of type string. Received type number'
)
}
return allocUnsafe(arg)
}
return from(arg, encodingOrOffset, length)
}
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
Buffer[Symbol.species] === Buffer) {
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true,
enumerable: false,
writable: false
})
}
Buffer.poolSize = 8192 // not used by this implementation
function from (value, encodingOrOffset, length) {
if (typeof value === 'string') {
return fromString(value, encodingOrOffset)
}
if (ArrayBuffer.isView(value)) {
return fromArrayLike(value)
}
if (value == null) {
throw TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
if (isInstance(value, ArrayBuffer) ||
(value && isInstance(value.buffer, ArrayBuffer))) {
return fromArrayBuffer(value, encodingOrOffset, length)
}
if (typeof value === 'number') {
throw new TypeError(
'The "value" argument must not be of type number. Received type number'
)
}
var valueOf = value.valueOf && value.valueOf()
if (valueOf != null && valueOf !== value) {
return Buffer.from(valueOf, encodingOrOffset, length)
}
var b = fromObject(value)
if (b) return b
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
typeof value[Symbol.toPrimitive] === 'function') {
return Buffer.from(
value[Symbol.toPrimitive]('string'), encodingOrOffset, length
)
}
throw new TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function (value, encodingOrOffset, length) {
return from(value, encodingOrOffset, length)
}
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array
function assertSize (size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be of type number')
} else if (size < 0) {
throw new RangeError('The value "' + size + '" is invalid for option "size"')
}
}
function alloc (size, fill, encoding) {
assertSize(size)
if (size <= 0) {
return createBuffer(size)
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === 'string'
? createBuffer(size).fill(fill, encoding)
: createBuffer(size).fill(fill)
}
return createBuffer(size)
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(size, fill, encoding)
}
function allocUnsafe (size) {
assertSize(size)
return createBuffer(size < 0 ? 0 : checked(size) | 0)
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(size)
}
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(size)
}
function fromString (string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8'
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
var length = byteLength(string, encoding) | 0
var buf = createBuffer(length)
var actual = buf.write(string, encoding)
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
buf = buf.slice(0, actual)
}
return buf
}
function fromArrayLike (array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0
var buf = createBuffer(length)
for (var i = 0; i < length; i += 1) {
buf[i] = array[i] & 255
}
return buf
}
function fromArrayBuffer (array, byteOffset, length) {
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('"offset" is outside of buffer bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('"length" is outside of buffer bounds')
}
var buf
if (byteOffset === undefined && length === undefined) {
buf = new Uint8Array(array)
} else if (length === undefined) {
buf = new Uint8Array(array, byteOffset)
} else {
buf = new Uint8Array(array, byteOffset, length)
}
// Return an augmented `Uint8Array` instance
buf.__proto__ = Buffer.prototype
return buf
}
function fromObject (obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0
var buf = createBuffer(len)
if (buf.length === 0) {
return buf
}
obj.copy(buf, 0, 0, len)
return buf
}
if (obj.length !== undefined) {
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
return createBuffer(0)
}
return fromArrayLike(obj)
}
if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
return fromArrayLike(obj.data)
}
}
function checked (length) {
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= K_MAX_LENGTH) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
}
return length | 0
}
function SlowBuffer (length) {
if (+length != length) { // eslint-disable-line eqeqeq
length = 0
}
return Buffer.alloc(+length)
}
Buffer.isBuffer = function isBuffer (b) {
return b != null && b._isBuffer === true &&
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}
Buffer.compare = function compare (a, b) {
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError(
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
)
}
if (a === b) return 0
var x = a.length
var y = b.length
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i]
y = b[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
Buffer.isEncoding = function isEncoding (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'latin1':
case 'binary':
case 'base64':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.concat = function concat (list, length) {
if (!Array.isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
if (list.length === 0) {
return Buffer.alloc(0)
}
var i
if (length === undefined) {
length = 0
for (i = 0; i < list.length; ++i) {
length += list[i].length
}
}
var buffer = Buffer.allocUnsafe(length)
var pos = 0
for (i = 0; i < list.length; ++i) {
var buf = list[i]
if (isInstance(buf, Uint8Array)) {
buf = Buffer.from(buf)
}
if (!Buffer.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
buf.copy(buffer, pos)
pos += buf.length
}
return buffer
}
function byteLength (string, encoding) {
if (Buffer.isBuffer(string)) {
return string.length
}
if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
return string.byteLength
}
if (typeof string !== 'string') {
throw new TypeError(
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
'Received type ' + typeof string
)
}
var len = string.length
var mustMatch = (arguments.length > 2 && arguments[2] === true)
if (!mustMatch && len === 0) return 0
// Use a for loop to avoid recursion
var loweredCase = false
for (;;) {
switch (encoding) {
case 'ascii':
case 'latin1':
case 'binary':
return len
case 'utf8':
case 'utf-8':
return utf8ToBytes(string).length
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return len * 2
case 'hex':
return len >>> 1
case 'base64':
return base64ToBytes(string).length
default:
if (loweredCase) {
return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
}
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.byteLength = byteLength
function slowToString (encoding, start, end) {
var loweredCase = false
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0
}
// Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return ''
}
if (end === undefined || end > this.length) {
end = this.length
}
if (end <= 0) {
return ''
}
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0
start >>>= 0
if (end <= start) {
return ''
}
if (!encoding) encoding = 'utf8'
while (true) {
switch (encoding) {
case 'hex':
return hexSlice(this, start, end)
case 'utf8':
case 'utf-8':
return utf8Slice(this, start, end)
case 'ascii':
return asciiSlice(this, start, end)
case 'latin1':
case 'binary':
return latin1Slice(this, start, end)
case 'base64':
return base64Slice(this, start, end)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return utf16leSlice(this, start, end)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = (encoding + '').toLowerCase()
loweredCase = true
}
}
}
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true
function swap (b, n, m) {
var i = b[n]
b[n] = b[m]
b[m] = i
}
Buffer.prototype.swap16 = function swap16 () {
var len = this.length
if (len % 2 !== 0) {
throw new RangeError('Buffer size must be a multiple of 16-bits')
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1)
}
return this
}
Buffer.prototype.swap32 = function swap32 () {
var len = this.length
if (len % 4 !== 0) {
throw new RangeError('Buffer size must be a multiple of 32-bits')
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3)
swap(this, i + 1, i + 2)
}
return this
}
Buffer.prototype.swap64 = function swap64 () {
var len = this.length
if (len % 8 !== 0) {
throw new RangeError('Buffer size must be a multiple of 64-bits')
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7)
swap(this, i + 1, i + 6)
swap(this, i + 2, i + 5)
swap(this, i + 3, i + 4)
}
return this
}
Buffer.prototype.toString = function toString () {
var length = this.length
if (length === 0) return ''
if (arguments.length === 0) return utf8Slice(this, 0, length)
return slowToString.apply(this, arguments)
}
Buffer.prototype.toLocaleString = Buffer.prototype.toString
Buffer.prototype.equals = function equals (b) {
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
if (this === b) return true
return Buffer.compare(this, b) === 0
}
Buffer.prototype.inspect = function inspect () {
var str = ''
var max = exports.INSPECT_MAX_BYTES
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
if (this.length > max) str += ' ... '
return ''
}
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (isInstance(target, Uint8Array)) {
target = Buffer.from(target, target.offset, target.byteLength)
}
if (!Buffer.isBuffer(target)) {
throw new TypeError(
'The "target" argument must be one of type Buffer or Uint8Array. ' +
'Received type ' + (typeof target)
)
}
if (start === undefined) {
start = 0
}
if (end === undefined) {
end = target ? target.length : 0
}
if (thisStart === undefined) {
thisStart = 0
}
if (thisEnd === undefined) {
thisEnd = this.length
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError('out of range index')
}
if (thisStart >= thisEnd && start >= end) {
return 0
}
if (thisStart >= thisEnd) {
return -1
}
if (start >= end) {
return 1
}
start >>>= 0
end >>>= 0
thisStart >>>= 0
thisEnd >>>= 0
if (this === target) return 0
var x = thisEnd - thisStart
var y = end - start
var len = Math.min(x, y)
var thisCopy = this.slice(thisStart, thisEnd)
var targetCopy = target.slice(start, end)
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i]
y = targetCopy[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1
// Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset
byteOffset = 0
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000
}
byteOffset = +byteOffset // Coerce to Number.
if (numberIsNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : (buffer.length - 1)
}
// Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset
if (byteOffset >= buffer.length) {
if (dir) return -1
else byteOffset = buffer.length - 1
} else if (byteOffset < 0) {
if (dir) byteOffset = 0
else return -1
}
// Normalize val
if (typeof val === 'string') {
val = Buffer.from(val, encoding)
}
// Finally, search either indexOf (if dir is true) or lastIndexOf
if (Buffer.isBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
} else if (typeof val === 'number') {
val = val & 0xFF // Search for a byte value [0-255]
if (typeof Uint8Array.prototype.indexOf === 'function') {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
}
}
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
}
throw new TypeError('val must be string, number or Buffer')
}
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
var indexSize = 1
var arrLength = arr.length
var valLength = val.length
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase()
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
encoding === 'utf16le' || encoding === 'utf-16le') {
if (arr.length < 2 || val.length < 2) {
return -1
}
indexSize = 2
arrLength /= 2
valLength /= 2
byteOffset /= 2
}
}
function read (buf, i) {
if (indexSize === 1) {
return buf[i]
} else {
return buf.readUInt16BE(i * indexSize)
}
}
var i
if (dir) {
var foundIndex = -1
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
} else {
if (foundIndex !== -1) i -= i - foundIndex
foundIndex = -1
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
for (i = byteOffset; i >= 0; i--) {
var found = true
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false
break
}
}
if (found) return i
}
}
return -1
}
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1
}
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}
function hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
var strLen = string.length
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16)
if (numberIsNaN(parsed)) return i
buf[offset + i] = parsed
}
return i
}
function utf8Write (buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}
function asciiWrite (buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length)
}
function latin1Write (buf, string, offset, length) {
return asciiWrite(buf, string, offset, length)
}
function base64Write (buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length)
}
function ucs2Write (buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}
Buffer.prototype.write = function write (string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = 'utf8'
length = this.length
offset = 0
// Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === 'string') {
encoding = offset
length = this.length
offset = 0
// Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset >>> 0
if (isFinite(length)) {
length = length >>> 0
if (encoding === undefined) encoding = 'utf8'
} else {
encoding = length
length = undefined
}
} else {
throw new Error(
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
)
}
var remaining = this.length - offset
if (length === undefined || length > remaining) length = remaining
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
throw new RangeError('Attempt to write outside buffer bounds')
}
if (!encoding) encoding = 'utf8'
var loweredCase = false
for (;;) {
switch (encoding) {
case 'hex':
return hexWrite(this, string, offset, length)
case 'utf8':
case 'utf-8':
return utf8Write(this, string, offset, length)
case 'ascii':
return asciiWrite(this, string, offset, length)
case 'latin1':
case 'binary':
return latin1Write(this, string, offset, length)
case 'base64':
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return ucs2Write(this, string, offset, length)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.prototype.toJSON = function toJSON () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
function base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf)
} else {
return base64.fromByteArray(buf.slice(start, end))
}
}
function utf8Slice (buf, start, end) {
end = Math.min(buf.length, end)
var res = []
var i = start
while (i < end) {
var firstByte = buf[i]
var codePoint = null
var bytesPerSequence = (firstByte > 0xEF) ? 4
: (firstByte > 0xDF) ? 3
: (firstByte > 0xBF) ? 2
: 1
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte
}
break
case 2:
secondByte = buf[i + 1]
if ((secondByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
if (tempCodePoint > 0x7F) {
codePoint = tempCodePoint
}
}
break
case 3:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
codePoint = tempCodePoint
}
}
break
case 4:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
fourthByte = buf[i + 3]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
codePoint = tempCodePoint
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xFFFD
bytesPerSequence = 1
} else if (codePoint > 0xFFFF) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000
res.push(codePoint >>> 10 & 0x3FF | 0xD800)
codePoint = 0xDC00 | codePoint & 0x3FF
}
res.push(codePoint)
i += bytesPerSequence
}
return decodeCodePointsArray(res)
}
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000
function decodeCodePointsArray (codePoints) {
var len = codePoints.length
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
}
// Decode in chunks to avoid "call stack size exceeded".
var res = ''
var i = 0
while (i < len) {
res += String.fromCharCode.apply(
String,
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
)
}
return res
}
function asciiSlice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i] & 0x7F)
}
return ret
}
function latin1Slice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i])
}
return ret
}
function hexSlice (buf, start, end) {
var len = buf.length
if (!start || start < 0) start = 0
if (!end || end < 0 || end > len) end = len
var out = ''
for (var i = start; i < end; ++i) {
out += toHex(buf[i])
}
return out
}
function utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end)
var res = ''
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
}
return res
}
Buffer.prototype.slice = function slice (start, end) {
var len = this.length
start = ~~start
end = end === undefined ? len : ~~end
if (start < 0) {
start += len
if (start < 0) start = 0
} else if (start > len) {
start = len
}
if (end < 0) {
end += len
if (end < 0) end = 0
} else if (end > len) {
end = len
}
if (end < start) end = start
var newBuf = this.subarray(start, end)
// Return an augmented `Uint8Array` instance
newBuf.__proto__ = Buffer.prototype
return newBuf
}
/*
* Need to make sure that buffer isn't trying to write out of bounds.
*/
function checkOffset (offset, ext, length) {
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
return val
}
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
checkOffset(offset, byteLength, this.length)
}
var val = this[offset + --byteLength]
var mul = 1
while (byteLength > 0 && (mul *= 0x100)) {
val += this[offset + --byteLength] * mul
}
return val
}
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
return this[offset]
}
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return this[offset] | (this[offset + 1] << 8)
}
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return (this[offset] << 8) | this[offset + 1]
}
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ((this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16)) +
(this[offset + 3] * 0x1000000)
}
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] * 0x1000000) +
((this[offset + 1] << 16) |
(this[offset + 2] << 8) |
this[offset + 3])
}
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var i = byteLength
var mul = 1
var val = this[offset + --i]
while (i > 0 && (mul *= 0x100)) {
val += this[offset + --i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
if (!(this[offset] & 0x80)) return (this[offset])
return ((0xff - this[offset] + 1) * -1)
}
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset] | (this[offset + 1] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset + 1] | (this[offset] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16) |
(this[offset + 3] << 24)
}
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] << 24) |
(this[offset + 1] << 16) |
(this[offset + 2] << 8) |
(this[offset + 3])
}
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, true, 23, 4)
}
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, false, 23, 4)
}
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, true, 52, 8)
}
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, false, 52, 8)
}
function checkInt (buf, value, offset, ext, max, min) {
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
if (offset + ext > buf.length) throw new RangeError('Index out of range')
}
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var mul = 1
var i = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var i = byteLength - 1
var mul = 1
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset + 3] = (value >>> 24)
this[offset + 2] = (value >>> 16)
this[offset + 1] = (value >>> 8)
this[offset] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = 0
var mul = 1
var sub = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = byteLength - 1
var mul = 1
var sub = 0
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
if (value < 0) value = 0xff + value + 1
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
this[offset + 2] = (value >>> 16)
this[offset + 3] = (value >>> 24)
return offset + 4
}
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
if (value < 0) value = 0xffffffff + value + 1
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
function checkIEEE754 (buf, value, offset, ext, max, min) {
if (offset + ext > buf.length) throw new RangeError('Index out of range')
if (offset < 0) throw new RangeError('Index out of range')
}
function writeFloat (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
}
ieee754.write(buf, value, offset, littleEndian, 23, 4)
return offset + 4
}
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
return writeFloat(this, value, offset, false, noAssert)
}
function writeDouble (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
}
ieee754.write(buf, value, offset, littleEndian, 52, 8)
return offset + 8
}
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert)
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (targetStart >= target.length) targetStart = target.length
if (!targetStart) targetStart = 0
if (end > 0 && end < start) end = start
// Copy 0 bytes; we're done
if (end === start) return 0
if (target.length === 0 || this.length === 0) return 0
// Fatal error conditions
if (targetStart < 0) {
throw new RangeError('targetStart out of bounds')
}
if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
if (end < 0) throw new RangeError('sourceEnd out of bounds')
// Are we oob?
if (end > this.length) end = this.length
if (target.length - targetStart < end - start) {
end = target.length - targetStart + start
}
var len = end - start
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
// Use built-in when available, missing from IE11
this.copyWithin(targetStart, start, end)
} else if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (var i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start]
}
} else {
Uint8Array.prototype.set.call(
target,
this.subarray(start, end),
targetStart
)
}
return len
}
// Usage:
// buffer.fill(number[, offset[, end]])
// buffer.fill(buffer[, offset[, end]])
// buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
// Handle string cases:
if (typeof val === 'string') {
if (typeof start === 'string') {
encoding = start
start = 0
end = this.length
} else if (typeof end === 'string') {
encoding = end
end = this.length
}
if (encoding !== undefined && typeof encoding !== 'string') {
throw new TypeError('encoding must be a string')
}
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
if (val.length === 1) {
var code = val.charCodeAt(0)
if ((encoding === 'utf8' && code < 128) ||
encoding === 'latin1') {
// Fast path: If `val` fits into a single byte, use that numeric value.
val = code
}
}
} else if (typeof val === 'number') {
val = val & 255
}
// Invalid ranges are not set to a default, so can range check early.
if (start < 0 || this.length < start || this.length < end) {
throw new RangeError('Out of range index')
}
if (end <= start) {
return this
}
start = start >>> 0
end = end === undefined ? this.length : end >>> 0
if (!val) val = 0
var i
if (typeof val === 'number') {
for (i = start; i < end; ++i) {
this[i] = val
}
} else {
var bytes = Buffer.isBuffer(val)
? val
: Buffer.from(val, encoding)
var len = bytes.length
if (len === 0) {
throw new TypeError('The value "' + val +
'" is invalid for argument "value"')
}
for (i = 0; i < end - start; ++i) {
this[i + start] = bytes[i % len]
}
}
return this
}
// HELPER FUNCTIONS
// ================
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
function base64clean (str) {
// Node takes equal signs as end of the Base64 encoding
str = str.split('=')[0]
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = str.trim().replace(INVALID_BASE64_RE, '')
// Node converts strings with length < 2 to ''
if (str.length < 2) return ''
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
while (str.length % 4 !== 0) {
str = str + '='
}
return str
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (string, units) {
units = units || Infinity
var codePoint
var length = string.length
var leadSurrogate = null
var bytes = []
for (var i = 0; i < length; ++i) {
codePoint = string.charCodeAt(i)
// is surrogate component
if (codePoint > 0xD7FF && codePoint < 0xE000) {
// last char was a lead
if (!leadSurrogate) {
// no lead yet
if (codePoint > 0xDBFF) {
// unexpected trail
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
} else if (i + 1 === length) {
// unpaired lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
}
// valid lead
leadSurrogate = codePoint
continue
}
// 2 leads in a row
if (codePoint < 0xDC00) {
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
leadSurrogate = codePoint
continue
}
// valid surrogate pair
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
} else if (leadSurrogate) {
// valid bmp char, but last char was a lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
}
leadSurrogate = null
// encode utf8
if (codePoint < 0x80) {
if ((units -= 1) < 0) break
bytes.push(codePoint)
} else if (codePoint < 0x800) {
if ((units -= 2) < 0) break
bytes.push(
codePoint >> 0x6 | 0xC0,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x10000) {
if ((units -= 3) < 0) break
bytes.push(
codePoint >> 0xC | 0xE0,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x110000) {
if ((units -= 4) < 0) break
bytes.push(
codePoint >> 0x12 | 0xF0,
codePoint >> 0xC & 0x3F | 0x80,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else {
throw new Error('Invalid code point')
}
}
return bytes
}
function asciiToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; ++i) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF)
}
return byteArray
}
function utf16leToBytes (str, units) {
var c, hi, lo
var byteArray = []
for (var i = 0; i < str.length; ++i) {
if ((units -= 2) < 0) break
c = str.charCodeAt(i)
hi = c >> 8
lo = c % 256
byteArray.push(lo)
byteArray.push(hi)
}
return byteArray
}
function base64ToBytes (str) {
return base64.toByteArray(base64clean(str))
}
function blitBuffer (src, dst, offset, length) {
for (var i = 0; i < length; ++i) {
if ((i + offset >= dst.length) || (i >= src.length)) break
dst[i + offset] = src[i]
}
return i
}
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
return obj instanceof type ||
(obj != null && obj.constructor != null && obj.constructor.name != null &&
obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
// For IE11 support
return obj !== obj // eslint-disable-line no-self-compare
}
}).call(this,require("buffer").Buffer)
},{"base64-js":9,"buffer":10,"ieee754":11}],11:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
var e, m
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var nBits = -7
var i = isLE ? (nBytes - 1) : 0
var d = isLE ? -1 : 1
var s = buffer[offset + i]
i += d
e = s & ((1 << (-nBits)) - 1)
s >>= (-nBits)
nBits += eLen
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
m = e & ((1 << (-nBits)) - 1)
e >>= (-nBits)
nBits += mLen
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
if (e === 0) {
e = 1 - eBias
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity)
} else {
m = m + Math.pow(2, mLen)
e = e - eBias
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
var i = isLE ? 0 : (nBytes - 1)
var d = isLE ? 1 : -1
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
value = Math.abs(value)
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0
e = eMax
} else {
e = Math.floor(Math.log(value) / Math.LN2)
if (value * (c = Math.pow(2, -e)) < 1) {
e--
c *= 2
}
if (e + eBias >= 1) {
value += rt / c
} else {
value += rt * Math.pow(2, 1 - eBias)
}
if (value * c >= 2) {
e++
c /= 2
}
if (e + eBias >= eMax) {
m = 0
e = eMax
} else if (e + eBias >= 1) {
m = ((value * c) - 1) * Math.pow(2, mLen)
e = e + eBias
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
e = 0
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
e = (e << mLen) | m
eLen += mLen
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
buffer[offset + i - d] |= s * 128
}
},{}],12:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
// cached from whatever global is present so that test runners that stub it
// don't break things. But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals. It's inside a
// function because try/catches deoptimize in certain engines.
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
throw new Error('clearTimeout has not been defined');
}
(function () {
try {
if (typeof setTimeout === 'function') {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
} ())
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
}
// if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch(e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch(e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
}
// if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function (fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
};
// v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function (name) { return [] }
process.binding = function (name) {
throw new Error('process.binding is not supported');
};
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };
},{}]},{},[2]);